222documents trouvés
Fixed-order and structure Hinfinite control with model based feedforward for elastic web winding systems
D.KNITTEL, D.HENRION, M.MILLSTONE, M.VEDRINES
Université de Strasb, MAC, New York
Manifestation avec acte : 11th IFAC/IFORS/IMACS/IFIP Symposium on Large Scale Systems. Theory and Applications, Gdansk (Pologne), Juillet 2007, 6p. , N° 07596
Diffusable
Plus d'informations
Mots-Clés / Keywords
H infinity control; Fixed order control; Winding systems; Fixed structure control; Nonconvex nonsmooth optimization;
Globally optimal estimates for geometric reconstruction problems
F.KAHL, D.HENRION
San Diego, MAC
Revue Scientifique : International Journal of Computer Vision, Vol.74, N°1, pp.3-15, Juin 2007 , N° 05517
Diffusable
110407Polynomial LPV synthesis applied to turbofan engines
W.GILBERT, D.HENRION, J.BERNUSSOU, D.BOYER
MAC, FEL-CVUT
Manifestation avec acte : 17th IFAC Symposium on Automatic Control in Aerospace (ACA 2007), Toulouse (France), 25-29 Juin 2007, 7p. , N° 06691
Diffusable
Plus d'informations
Abstract
Results on polynomial fixed order controller design are extended to SISO gain-scheduling with guaranteed stability and H1 performance over the whole scheduling parameter range. Salient features of the approach are (a) the use of polynomials as modeling objects; (b) the use of flexible LMI conditions allowing polynomial dependence of the open-loop system and controller transfer functions in the scheduling parameters; and (c) the decoupling in the LMI conditions between the Lyapunov variables and the controller variables, allowing both parameterdependent Lyapunov functions and fixed-order controller design. The synthesis procedure is integrated into the ATOL framework developed by the manufacturer of aircraft and space engines Snecma to systematically design reduced complexity gain-scheduled control laws for aircraft turbofan engines.
ATOL : outil de contrôle moteur sous MATLAB
W.GILBERT, D.HENRION, J.BERNUSSOU
MAC
Manifestations avec acte à diffusion limitée : 8ème Congrès des Doctorants de l'Ecole Doctorale Systèmes (EDSYS 2007), Albi (France), Mai 2007, 6p. , N° 07289
Diffusable
Plus d'informations
Résumé
Cet article décrit les fonctionnalités de l'outil ATOL, développé par Snecma pour le contrôle de moteurs d'avion. ATOL, pour "ATelier contrOLe moteur", est un outil de simulation interfacé avec MATLAB, dont le but est double : (a) simplifier et automatiser autant que possible les différentes phases d'identification, modélisation, synthèse, analyse dans le cadre de la commande de moteurs d'avion ; (b) intégrer de nouvelles techniques de synthèse LPV mises au point dans le cadre d'une collaboration entre le LAAS et Snecma. ATOL permet également de valider ces techniques de synthèse, basées sur la commande H1 via l'optimisation convexe LMI.
Quadratic separation for feedback connection of an uncertain matrix and an implicit linear transformation
D.PEAUCELLE, D.ARZELIER, D.HENRION, F.GOUAISBAUT
MAC
Revue Scientifique : Automatica, Vol.43, N°5, pp.795-804, Mai 2007 , N° 06095
Diffusable
Plus d'informations
Abstract
Topological separation is investigated in the case of an uncertain time-invariant matrix interconnected with an implicit linear transformation. A quadratic separator independent of the uncertainty is shown to prove losslessly the closed-loop well-posedness. Several applications for LTI descriptor system analysis are then given. First, some known results for stability and pole location of descriptor systems are demonstrated in a new way. Second, contributions to robust stability analysis and time-delay systems stability analysis are exposed. These prove to be new even when compared to results for usual LTI systems (not in descriptor form). All results are formulated as linear matrix inequalities (LMIs).
Mots-Clés / Keywords
LMI; Control;
Integration of the SISO polynomial LPV synthesis to ATOL
W.GILBERT, D.HENRION, J.BERNUSSOU
MAC
Rapport de Contrat : Contrat SNECMA, Mars 2007, 38p. , N° 07324
Non diffusable
110707Stabilization via nonsmooth, nonconvex optimization
J.V.BURKE, D.HENRION, A.S.LEWIS, M.L.OVERTON
MAC, CORNELL, New York, University of Washin
Revue Scientifique : IEEE Transactions on Automatic Control, Vol.51, N°11, pp.1760-1769, Novembre 2006 , N° 05164
Diffusable
108280H-infinity controller design on the COMPleib problems with the robust control toolbox for Matlab
D.HENRION
MAC
Revue Scientifique : International Journal of Tomography and Statistics, Vol.6, N°S07, pp.69-73, 2006 , N° 05581
Diffusable
108281Fixed-order Hinfinite decentralized control with model based feedforward for elastic web winding systems
D.KNITTEL, M.VEDRINES, D.HENRION, P.PAGILLA
Université de Strasb, INSA Strasbourg, MAC, Oklahoma
Manifestation avec acte : 41st Annual IEEE Industry Applications Society Conference, Tampa (USA), 8-12 Octobre 2006, 8p. , N° 06421
Diffusable
108762Robust Hinfinite fixed order control strategies for large scale web winding systems
D.KNITTEL, M.VEDRINES, D.HENRION, P.PAGILLA
Université de Strasb, INSA Strasbourg, MAC, Oklahoma
Manifestation avec acte : 2006 IEEE International Conference on Control Applications, Munich (Allemagne), 4-6 Octobre 2006, pp.1964-1970 , N° 06420
Diffusable
107908